Cup spindle for artificial-silk-spinning machines



sept. 22, 1925.

.F. sElBEL CUP SPINDBE FOR ARTIFICIAL -SILK SPINNING MACHINES Filed Nov. 24. 1924 Patented Slept; y1925".

4UNITI-:D STA-Tas PATENT -or-Fica :FRITZ SEIBEL, OF CHARLOTTENB'URG, GERMANY@ ASSIGNOR T0 BRLIN-KABLSRUHER INDUSTREWERKE A.Gf., 0F BERLIN-WITTENAU, GERMANY, A. COMPANY OF GER- MANY.

l v CUP SPINDLE-FOR ARTIFICIALHSILK-SPINNING 'MACH'.INES.

Application led November 24, 1924. Serial' No. 752,046..

for a very high rotary speed, and having direct electrical drive, the spindle being characterized by a particularly satisfactory construction and arrangement of the parts provided for damping harmful vibrations andsalso' by the manner in which the internalparts arel protected from acid.

rlhe damping of harmful vibration both of the` spindle and the spinning cap is ef fectedaccordingto the Invention by resiliently supporting the lower bearing race which acts together with a neck bearing sprung in all directions in such a manner that the low centre of gravity of the rotating system prevents the occurrence of a large part of the vibrationl which tends to occur when the critical rotary speed is eX- 'ceed/ed. f Y

Accordin ly the spindle undergoes slight dedections uring rotation and rotates about a geometric axis more or less removed trein the true axis of the spindle. i

To permit such a deection ci? the spindle axis without interfering with the satisfaire`= tory running ot the rotor ont the electric motor, the rotorvis g ven a slightly arched (barrel shaped) prole.

A further improvement aorded by the invention consists inl that the parte outside the actual s indle casing (toot bearing'and casing coverg are protectedagainst acids-by the provision of bell shaped coverswhich are Vso arranged that they can participate without restraint in the ltilting et the ing in relation to the base plate at one end andin relation to the upwardly projecting part et the spindleat the other end.

Y. A vertical section of an embodiment et the invention is illustrated by way et eX ample in the accompanying drawing. i

The spindle a; is enclosed by a tuhulary casing e, which is closed at the top by a cover p and at the bottom is screwed into a toot plate f which rests on a centralv pivot h so that it is capable of-tilting about afbase plate t provided with a rim k. i

The lower end of the spindle mis carried in a vball vbearing g arranged on the inner side ot the foot plate f, the rotor m of the driving motor being secured to the spindle above the'bearing g', whilst the .stator a is securedin the lower part of the casing e.

The position ofthe wholek system tilting about the pivot. h is maintained, modified by v centrifugal force, by springs z', the tension of which is regulated by the nuts on bolts u which are screwed into the base plate t. The neck bearingrbfis sprung on all sides. for which purpose springs d or like resilient means are provided, which act from all sides on aange c', on the outerraceo of the ball bearing" All th@ 10We1 parts which tilt about the' i H i base plate but do not rotateare protected against the entry of Huid by aflcell Z attached to the casing e. Similarly at the ,top a aching on the end of the-v spindle a; ro- );ecting beyond the cover pand forme of an oil saturatedfelt washer z and a cover w lying thereon, is protected Iby a dome g, 'lhe spinning cup s is mounted on the free end r of the spindle in known manner.

eek

The current is supplied to the'electric motor through a packed a tube o., A

The opening inthe cover p allows side y play to the spindle passing therethrough and is covered by the above mentioned pachng washer a of telt or the like, which is under spring pressure. .ln this way the neck bearing t is protected against the entry ot acid vaours.

ll; rotor m is a slightly barrel shaped torni which allows it( to taire part in the `tilting oit the spindle 01: without altering the air. gap between rotor and stator beyond'allovvable lits.,A y Y The tubular casing e can he lled withv oil in a lrnovvn way to about the middle el the neck bearing, so that all parts rubbing against one another within the. tubular casing remain permanently lubricated.` vThe oil orins at the same timea vgood electricv insulatorl and hinders chemical action on the metallic pzrts., by any acid' vapour that may possibly present,

What I claim is 1. In a cup spindle Vfor artilicial silk spinning machines, a base plate, la foot plate tiltably mounted on said base plate, adjustable spring means for holding said foot4 plate, a-

non-ievoluble casing on' said foot plate, a foot bearing in said foot plate, a sprung neck bearing at the top of said casing, a spindle carried in said bearings a cover having a hole therein of larger diameter than said spindle, at the top ofcsaid casing, and a packed connection between said spindle and said cover.

2. ln a cup spindle for artificial silk spinning machines, a base plate, a foot plate tiltably mounted on said base plate, adjustable spring means for holding said foot plate, a non-revoluble casing on said foot plate, a foot bearing in said foot plate, a sprung neck bearing at the top of'said casing, a spindle carried in saidvbearings,-a cover having a hole therein of larger diaineter than said spindle, at the top of said casing, a packed connecti-on between said spindle and said cover, a motor stator within said casing and a barrel shaped motor rotor on said spindle within said stator.

3. A cup spindle for artificial silk spinning machines, comprising an outer casing, resilient and tiltable supporting means for said casing, a spindle resiliently and tiltably borne within said casing, an electric motor directly drivingsaid spindle within said casing, a cup 0n said spindle, a packed connection between said spindle and said casing, a bell shaped cover over said packing, and a bell shaped cover on said casing,

covering said resilient supporting means.

4. A cup spindle for artificial silk spinning machines, comprising a base plate, a

maltese foot plate universally pivoted thereon, adjustable spring means connecting said -foot plate with said base plate, a non-revoluble casing on said foot plate, a 'foot bearing on said foot plate, a sprung neck bearing at the top of said casing, a spindle carried in said bearings, a motor in said casing for driving said spindle, a cover on said casing having a hole therein of larger diameter than said spindle, a packed connection between said spindle and said casing, a domed cover on said spindle over said packing, a domed cover vony said casing over said spring connecting means overlapping the rim of said base plateand a cup on said spindle.

. 5. A cup spindle for artificial silk spinning machines, comprising a base plate, a foot plate universally pivoted thereon, bolts Vin said base plate passing throughvsaid foot plate, adjustable springs oii said bolts bearing on said foot plate, a non-i'evoluble casing on said foot plate, a foot bearing on said foot plate, a motor rotor in said casing, a spindle carried on said foot bearing, u, barrel shaped motor rotor on said spindle within said rotor, a neck bearing on said spindle, universally yielding springs connecting said neck bearing with said casing, a cover on said casing having a hole of larger diametei1 than said spindle, an oil saturated felt Washer on said cover, a lspring pressed disc bearing en said felt washer, a dome cover on said spindle covering said felt washer and disc, a domed cover on said casing over said foot plate and adjustable springs overlapping the rim of said base plate, and a cup 0n said spindle.l

In testimony whereof I have signed my name to this specification.

FRITZ SEIBEL. 

